Idtech4 Android/Windows/Linux CrossPlatform Multiplayer (Doom 3 Doom3)
Not too long ago you needed a several thousand dollars high performance gaming computer to be able to run this at those quality settings...and now it runs on my mobile phone with complete CrossPlatform Multiplayer capabilities...
CrossPlatform Multiplayer OS Setup Specs
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Dedicated Server: Linux Ubuntu
Client1 (blue): Windows7
Client2 (red): Android Lollipop